I got a new a7r last week and the mount is extremely rigid, not squishy at all, maybe they have addressed it regardless?

I did the 30 sec exposure at 25000 and just got sensor noise (a few random speckles, nothing more)

either way conforting to see it happen with other cameras, not really an issue for me being a portrait person, but I could understand how it would upset someone like Poki who shoots night time landscapes.

I've yet to test the my A7 using the ISO 25600 & 30 sec exposure. Can't imagine a scenario where I shoot with those parameters. I've used the A7 in bright places including direct sunlight and doesn't seem to have an issue. While I understand that I might run into issues when I do long exposure, I don't want to look for problems that may or may not exist that most likely won't affect me..

Yeah not really a concern for me either. When I did that 30 second high ISO test I only got sensor noise when using the kit lens. Got some crazy light leak when using the hawk helicoid adapter and voigtlander lens. So it seems to be adapter that's causing light leak for mine.

These articles have me laughing. The online world provides a platform for the creation of mass hysteria for otherwise meaningless events. I saw more about these light leaks than the overall quality of a revolutionary camera in the last month. That's a shame.

No kidding. When I read that you have to 1) replace your lens with a flimsy, plastic body cap, and 2) expose an image for 30 secs. at ISO 25600 to detect the "problem," my keen mind told me that, whatever "it" was, it wasn't likely to affect me. But that's the Intertubes for ya.

Seems I didn't do the test right, I didn't shine a torch during the exposure. Literally can't be arsed repeating it though, too busy enjoying the camera as it will never effect me for what I shoot. But I appreciate it's important for some long exposure folk.

I haven't seen this 'problem' on my A7. I also read Roger's (Lensrentals) blog, which can be quite amusing. I don't normally take photos at ISO 25600 with a 30 sec exposure so I may never know if I should worry.

My A7R was just returned from Sony - who replaced internal parts in the mount and included a molded rubber cover for the mount/release button for extended exposures. This is what I just posted on the Sony community website:

As one of the more vocal customers in this thread, I wanted to bring the folks up to date that my A7R returned home today - and I'm 110% satisfied with the resolution...

In short and in reading the Technician report - the issue was fully addressed, and in fact, Sony went to the extent of e-mailing me some "before" and "after" images, just in case I had any questions or concerns. That is far beyond anything I've encountered with other camera manufacturers when they work on their high-end systems.

Nicely done, Sony - and highly professional.

And while it was there, according to the work sheet - the camera was gone through and some aspects to the mount were inspected and replaced if needed. And with roughly 5000 shutter activations, they also performed a CLA - and included an add-on mount cover to insure that for extremely long exposures under extreme and extenuating circumstances, the issue would never be an issue again on my A7R.

So, again - my thanks to the Moderator on this forum who encouraged me to call the Sony Service line. Thank you. I now have absolutely no reason for keeping my Nikon pro-level bodies and for me - I'll continue to invest in the Sony systems...

This has come to an excellent resolution for this customer (me), at least in my opinion.

Click to expand...

I've never seen anyone post an update to the Sony fix (Rubber Mount Shield) and replacing some internal parts under warranty - so I figured I'd let you folks know first.